4-digit display with decimal point and colon. Forward current 20ma per segment. Leds in each segment are in series. 1.6VDC drop per each led in segment. 8-1/2"W x 2-5/8"H. 17-pin connector R/A off the back of the PCB. Number on the back of the display appears to be DSP-GSB258CMALT but the 'M' position is blurred on all units. (28L006) View Spec Sheet